JPH018826Y2 - - Google Patents

Description

[Detailed explanation of the invention] ``Field of application of the invention'' This invention is used for large commercial applications such as gas-powered rotary cookers used to boil large quantities of food in the kitchens of hotels, restaurants, schools, etc. The present invention relates to a burner device for a boiling pot, and particularly to a burner device in which a sub-burner is installed below the center of the hemispherical pot bottom for both ignition of the main burner and heating of the center of the pot bottom.

``Problems that conventional technology and ideas cannot solve'' In conventional commercial boilers, in order to heat a pot with a diameter of more than 1 m, a ring is placed below the bottom of the hemispherical pot around the center of the pot. Generally, a burner device is used in which Metschel burners, which can generate a powerful amount of heat, are installed at predetermined intervals so as to surround the pot, but in this burner device, the flame does not directly affect the center of the bottom of the pot, and the flame is only exposed to the surrounding hot air and the pot itself. It has been found that depending on the food being cooked, there may be uneven heating due to insufficient heating at the center of the bottom of the pot.

Therefore, attempts were made to install multiple Metskel burners below the center of the pot so that the flame would also act on the center of the pot, but the diameter of the flame hole of the Metskel burners was large and the fire power could not be adjusted to a low flame. There was a problem in which the flame of the metzkelbana concentratedly acted on the center of the dish along with the surrounding hot air, causing the food to be burnt.

On the other hand, with conventional Metzkel burners, the heat cannot be adjusted very low as described above, so it is not possible to set the heat low enough to keep the food in the pot warm without burning it, which is inconvenient when keeping warm is required.

Furthermore, in the conventional burner device described above, a pilot bar is provided near some of the Metskel burners, and by igniting some of the Metskel burners, adjacent Metskel burners placed at a certain distance are sequentially ignited and ignited. Because of this, there was a drawback that some raw gas was emitted from the Metzkel burner due to delayed ignition.

In order to solve the above-mentioned conventional problems, this invention
By installing a sub-burner in the center of the bottom of the pot surrounded by a group of Metzkel burners that make up the main burner, which can be adjusted to a low flame and emits flame in a radial direction, it heats the food inside the pot during boiling. To propose a burner device which can satisfactorily heat the center of the bottom of a pot without causing unevenness and burntness, can keep warm with low heat, and can instantly ignite a main burner.

``Example, Means for Solving Problems'' Hereinafter, an example in which this invention is implemented in a gas-type rotary pot shown in the drawings will be explained. A double inner and outer gas distribution pipe 2, 2 forming a ring at the center is installed,
A large number of Mezkel burners 3 are installed upward on each gas distribution pipe 2, 2 at predetermined intervals, and the three groups of Mezkel burners arranged in an annular configuration constitute a main burner. A sub-burner 4 is installed in the center of the space below the center of the bottom of the pot.

The sub-burner 4 has a gas reservoir chamber 5 with a circular cross section in the center that can be filled with a predetermined amount of gas, and a horizontally elongated slit-shaped gas reservoir chamber 5 that communicates with the gas reservoir chamber 5 and ejects gas in a radial direction around its outer periphery. It is formed in a hollow disk shape with a large number of flame holes 6 arranged circumferentially through partition walls 7,
A gas supply pipe 7 is connected to the center of the lower surface of the gas storage chamber 5 .

The sub-burner 4 is fixed at such a position that a substantially horizontal flame from each flame hole 6 is directed onto the surrounding Metzkel burners 3.

"Operation of the invention" When heating and boiling food in the boiling pot using the burner device configured as described above, the gas tank of the sub-burner 4 is opened and gas is supplied from the gas supply pipe 7 into the gas storage chamber 5. When the gas ejected from some of the flame holes 6 is ignited by an ignition rod or an automatic igniter at the same time, the adjacent flame holes 6 will be ignited one after another, and the entire surrounding area will be ignited. ignite.

In this state, when the gas tank of the main burner is opened and gas is introduced from the gas distribution pipes 2, 2 to each Metkel burner 3 and ejected from the flame hole at the upper end, all of them are instantly ignited by the flame from the sub-burner 4. Burn.

The combustion of each Metzkel burner 3 heats the bottom of the pot body 1 outside the center, and the center of the pot bottom is heated by a ring-shaped flame that continues around the outer circumference of the sub-burner 4. .

In this case, the flame hole 6 of the sub-burner 4 is a slit with a vertical width of about 1 to 3 mm, and gas is continuously distributed and supplied to this from the gas reservoir chamber 5, so the flame can be adjusted to a very weak flame. Moreover, this flame is ejected almost horizontally, and the tip is slightly directed upward due to the influence of the upward flame jet of Metskel burner 3, so even if sub-burner 4 is located close to the center of the bottom of the pot, a portion No intensive heating,
The entire center can be heated fairly uniformly to allow for good boiling without causing burnt spots or uneven heating.

On the other hand, in order to keep the cooked food warm as described above, the main burner, the Metzkel burner 3, is turned off, and only the sub-burner 4 is burned to heat the pot body 1 with a low flame that comes out almost horizontally. , it is possible to keep food well warmed under low heat that does not burn the food.

"Effects of the invention" As described above, according to this invention, the main burner is arranged in an annular manner below the center of the bottom of the kettle body.
In the central space surrounded by the main burner, a sub-burner is installed, which has a large number of horizontally slit-like flame openings arranged radially around the outer periphery of the gas reservoir chamber in the center. The gas filled and supplied to the reservoir is distributed and supplied to the surrounding flame holes, and by igniting the gas ejected from the slit openings of the flame holes, adjacent flame holes are ignited one after another, and this flame spreads almost horizontally into a ring. The tip of the flame is directed slightly upward due to the influence of the upward flame jet of the Metskel burner, so even if the sub-burner is located close to the center of the bottom of the pot, it will not intensively heat a part of the bottom of the pot. The entire portion can be heated fairly uniformly and cooked well without causing burnt parts or uneven heating.

In addition, since the flame opening of the sub-burner is a slit of less than a few millimeters, it is possible to generate a very low ring-shaped flame, and when the main burner is turned off, the sub-burner's weak flame that radiates horizontally prevents food from burning. Good heat retention can be achieved without causing heat generation.

In addition, the ring-shaped flame of the sub-burner can instantaneously and reliably ignite the main burners located at distant positions around the sub-burner, thereby eliminating the release of raw gas at the time of ignition.

[Brief explanation of drawings]

FIG. 1 is a partial plan view showing an embodiment of this invention.
FIG. 2 is a partial vertical sectional view of the same as the above, FIG. 3 is a partial vertical sectional view of the sub-burner according to the invention, and FIG. 4 is a vertical sectional front view showing the sub-burner in use. 1...Kettle body, 3...Metzkel burner (main burner), 4...Sub burner, 5...Gas reservoir chamber,
6...flame hole.

Claims (1)

[Scope of utility model registration request] A large number of Metzkel burners constituting the main burner are arranged at predetermined intervals in an annular direction below the center of the bottom of the pot body, and within the central space surrounded by the group of Metzkel burners, the outer periphery of the gas reservoir chamber in the center is 1. A burner device for a commercial boiler, characterized in that a sub-burner is installed with a large number of flame ports arranged in a radial manner in the form of horizontally elongated slits, with the flame ports facing above the Metzkel burner.